Sorry, but was the directory /Android/data/PetePhotos/DCIM/Camera? I would suggest just putting it in a directory called /Pictures on the SD card. If the directory you used is a subdirectory of /Android/data, then it likely has a .nomedia file somewhere that is instructing the system to ignore any image files in that directory or any subdirectories.
It is working now. I moved the photos to a directory right under card called pictures and it worked. At first I called this directory photos and it did not work. Once I renamed it to pictures, it did work. Also I'm using a 128GB Class 10 uSD card.